GB/T 678-2023 Translated English of Chinese Standard (GB/T 678-2023, GBT678-2023): Chemical reagent - Ethanol [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2023. 12. 23. - 13페이지 This document specifies the characters, technical requirements, test methods, inspection rules, packaging and marking of the chemical reagent ethanol (anhydrous ethanol). This document is applicable to the inspection of the chemical reagent ethanol (anhydrous ethanol). NOTE: the rational formula of the chemical reagent ethanol (anhydrous ethanol) is CH3CH2OH, the relative molecular mass is 46.07 (in accordance with the 2022 international relative atomic mass), and the CAS No. is 64-17-5. |
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acid standard titration area of methanol arithmetic mean calculated in accordance Carbonyl Compounds CH3CH2OH chemical purity chemical reagent ethanol conditions See 6.2.2 conduct the determination Density Determination conditions Determination method Weigh-take Easily Carbonized Substance ethanol anhydrous ethanol evaporating dish expressed in g external standard solution hydrochloric acid standard hydroxide standard titration infrared lamp instruments Shall comply Isopropanol liquid-phase chromatography purity maintain for 30 mass fraction materials and instruments Measure-take 100 mL methanol external standard methanol standard substance mL of sulfuric mL/min modified mol/L n-propanol packaging and marking parallel determination results purity is adjusted reagent ethanol anhydrous requirement for top-grade requirements for ethanol sodium hydroxide standard specifications in GB/T specified date standard colorimetric solution standard titration solution stipulations of 5.1 stipulations of 9.2 stipulations of Chapter stipulations of GB/T Take the arithmetic technical requirements Test Methods test shall comply titration solution c(HCl titration solution c(NaOH top-grade purity Version Water-mixing Test Zinc